Unfortunately classes HTMLAnchorElement and HTMLLinkElement do not support Click methods.
Also as far as I know links in FireFox does not support click method.
Is this any way to simulate it from the code?

Yes this is the variant, but in this case we have too much cases:
1) yes it can be javascript (not a problem)
2) but this can also be a link in a frame, and i should navigate the exact frame to the href of link, how can i do it? Is there any way to navigate the exact frame (not the whole browser)?

you do not have access from javascript to frames from domain differs from domain of the main document.

Last edited by delopero (February 04, 2010 11:35 AM)

Hi everyone,

I've been struggling and making research about this for a while now.
I want to simulate a link click in Firefox using Javascript. Directly navigating to the address is not enough in my case.
I try a specific code in a Javascript console and it works, but when I use the same code with GeckoFX the link is not clicked.

I looked at the mentioned post about the DOMSelector (DOM.rar in http://geckofx.org/viewtopic.php?id=578) but I don't know how to use it.
I guess I need to get Gecko FX Source, add those files in some place and rebuild it?

Here goes the code I'm trying on a Visual Studio 2008 C# Windows Form:

            string js = @"javascript:
                l = document.getElementById('link'); 
                alert('link = ' + l);
                function fireEvent(obj,evt){
                    alert('fireEvent');
                    var fireOnThis = obj;
                    if( document.createEvent ) {
                           alert('createEvent');
                        var evObj = document.createEvent('MouseEvents');
                        evObj.initEvent( evt, true, false );
                        fireOnThis.dispatchEvent(evObj);
                    } else if( document.createEventObject ) {
                        fireOnThis.fireEvent('on'+evt);
                    }
                }
                fireEvent(l, 'click');
            ";

            geckoWebBrowser1.Navigate(js);

The link element is obtained correctly but the alert('fireEvent') never gets triggered.

Is my approach correct or should I try other way?
Does Firefox somehow prevents clicking a link programatically?

Any help on this would be appreciated.

Thanks in advance.

Regards,

Fede

Anyone managed to do that ?

I am making scraper and for now it is navigating to javascript:blabla links but for some site that is not working (no href attributes in links at all)

AFAIK we can get XY cordinates of every node on the page, anyone know how to send winapi click to that location ?

For cordinates I tought I saw someware properties that return XY relative to geckoWebBrowser control, now i can find only
GeckoElement.OffsetLeft
GeckoElement.OffsetTop
They as I see are relative to their DOM parent. If we sum all XY values of parents all the way up to BODY element we may get right result.


For sending WM_MOUSEDOWN off course we send it to geckoWebBrowser but we also send coordinates as parameters right ?

I'll pull up my vb code and post it tomorrow. It isn't the same as the German code you had posted but it is definitely accurate as I had used it in my old GeckoFx project to place a drop down under certain web controls.

Now that I think about it a bit more, you may be able to pull off the wm_mousedown/mouseup msg trick using the coordinates but, I haven't tested this myself. I'm not positive but, the DOM files that I had posted (originally by M1Labbe, I believe) may be useful in your endeavor. (You'll have to use the forum search to find them but, I'm sure I posted them as attachments to several of my posts). In any case, good luck on your project.

Best Regards,
Softwerx

EDIT: Unfortunately, I'm unable to find the project in which I have the code. If I run across it some time soon I'll be sure to post it for you.

Last edited by softwerx (April 01, 2010 9:41 PM)

Glad to hear you got it working. I'll still post my code for getting element coordinates on a page when I run across it.

Best Regards,
Softwerx